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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

The ecological effects of the cleared boundaries of Bruce Peninsula National Park

St. James, Katherine 06 November 2009 (has links)
Bruce Peninsula National Park (BPNP) clears a 2 m swath of trees on the boundary in order to make it clear when one is entering the park from any neighbouring land; this in particular aims to protect the park and its inhabitants from illegal actions such as hunting and logging. This study looks at the ecological effects of this practice by measuring various microclimate variables and the abundance of eastern redback salamanders (Plethodon cinereus) on the boundary and comparing these measurements to parallel transects at 5, 10, 15, 20, and 40 m. Because it is a small linear development, it is then compared to other types of linear developments, such as roads, trails, and pipelines. The microclimate variables of air temperature, slug abundance, canopy cover, soil pH, total cover area, litter depth, and relative humidity were all significantly affected (p<0.05) up to 10 m into the adjacent forest, indicating that the cleared boundaries do change the surrounding microclimate. Soil pH, downed woody cover area, litter depth, and canopy cover were significantly affected (p<0.05) up to 5 m away from the boundary. Sixty hectares, or 0.4%, of the land area of BPNP is thus affected by the microclimate changes caused by the cleared boundary. These effects are similar to those found for other narrow, vegetated linear developments such as trails. Over double the number of salamanders were found on the boundary as compared to in the forest; this is due to higher cover area availability on the cleared boundary from the felled trees. Therefore, the boundary does not act as a barrier to eastern redback salamander movement, nor does it fragment the local population. Salamander abundance was best explained by the amount of cover area, snail abundance, and the dominant type of vegetation present along transects. It was also found in an additional study that salamander abundance tended to increase with increasing days since the last precipitation event, contrary to most woodland salamander monitoring protocols and methods. The boundaries were seen also to be used by hunters and recreationalists through incidental observations of human disturbance. This increased access to remote areas of the park through use of the cleared boundaries is an issue that requires further study, as the boundary itself may be leading to an increase in illegal activity. Recommendations to BPNP include leaving downed woody cover on the boundary, minimizing the boundary width, reducing lines of sight, decreasing accessibility, increasing landowner and park staff education, communicating with adjacent landowners, and securing funding to complete and maintain the boundary clearing.
2

The ecological effects of the cleared boundaries of Bruce Peninsula National Park

St. James, Katherine 06 November 2009 (has links)
Bruce Peninsula National Park (BPNP) clears a 2 m swath of trees on the boundary in order to make it clear when one is entering the park from any neighbouring land; this in particular aims to protect the park and its inhabitants from illegal actions such as hunting and logging. This study looks at the ecological effects of this practice by measuring various microclimate variables and the abundance of eastern redback salamanders (Plethodon cinereus) on the boundary and comparing these measurements to parallel transects at 5, 10, 15, 20, and 40 m. Because it is a small linear development, it is then compared to other types of linear developments, such as roads, trails, and pipelines. The microclimate variables of air temperature, slug abundance, canopy cover, soil pH, total cover area, litter depth, and relative humidity were all significantly affected (p<0.05) up to 10 m into the adjacent forest, indicating that the cleared boundaries do change the surrounding microclimate. Soil pH, downed woody cover area, litter depth, and canopy cover were significantly affected (p<0.05) up to 5 m away from the boundary. Sixty hectares, or 0.4%, of the land area of BPNP is thus affected by the microclimate changes caused by the cleared boundary. These effects are similar to those found for other narrow, vegetated linear developments such as trails. Over double the number of salamanders were found on the boundary as compared to in the forest; this is due to higher cover area availability on the cleared boundary from the felled trees. Therefore, the boundary does not act as a barrier to eastern redback salamander movement, nor does it fragment the local population. Salamander abundance was best explained by the amount of cover area, snail abundance, and the dominant type of vegetation present along transects. It was also found in an additional study that salamander abundance tended to increase with increasing days since the last precipitation event, contrary to most woodland salamander monitoring protocols and methods. The boundaries were seen also to be used by hunters and recreationalists through incidental observations of human disturbance. This increased access to remote areas of the park through use of the cleared boundaries is an issue that requires further study, as the boundary itself may be leading to an increase in illegal activity. Recommendations to BPNP include leaving downed woody cover on the boundary, minimizing the boundary width, reducing lines of sight, decreasing accessibility, increasing landowner and park staff education, communicating with adjacent landowners, and securing funding to complete and maintain the boundary clearing.
3

From Dameisho to Meisho

Petko, Lukas January 2015 (has links)
Seen from abroad, Tokyo appears as a huge, vibrant metropolis where 21st-century Japan meets the traditional side of the country. Tokyo´s skyline is a diverse jumble of traditional houses and shrines, and modern architecture from skyscrapers of glass to 1970´s living capsules. Since the beginning, Tokyo has had great prerequisites for creating a city with amazing urban environment. Water was the first reason for people to settle down in Tokyo Bay. During Edo period (1603 – 1867), Tokyo was always described as a picturesque city with well-planned hydrology and a harmonic relationship with nature. With its canals full of water, it was a city comparable to Venice. The distribution and exchange relied almost entirely on water transport. With the expansion of the city, the water system had to be upgraded, which led to creating a complex network of waterways. Unlike in Western countries, where the economic, social and cultural life of the city developed around rather formal places as plazas and squares, in Japan, the lifeblood of the city developed in close connection with the water and nature. These places, also known as “meisho” (名所, lit. “famous places”) used to be linear open structures such as streets, river shores and bridges. During the transformation of Tokyo into a modern capital, the city cut many ties with the past. The unused canals suddenly became redundant and started belonging to the “wrong” side of the city. By the 1980s, many of the waterways were so polluted that the government began filling them up or covering them with elevated highways in preparation for the 1964 Tokyo Olympics. The modernization and its transformation also meant that most of the network of “meisho” and greenery have disappeared. “From dameisho to meisho” is inspired by series of woodblock prints “One Hundred Famous Views of Edo” (名所江戸百景, Meisho Edo Hyakkei) completed by the Japanese artist Hiroshige Ando (1797–1858), depicting a matrix of famous public spaces in Tokyo. My project examines the possibilities of recasting “meisho”, a spatial representation in Japanese culture, into a new, modern context via editing different layers of the city and its fabric. It explores linear, thread-like spaces such as Edo waterways, its transformations roads, as well as recently built elevated highways in order to search for contaminations and new collaborations, unexpected conditions and create new, green urban stitches. As one of the tackling tools, the project also looks at demographic trends shaping Japan and benefits from aging society and shrinking Japanese population. Last but not least I investigate ways of graphical reinterpretation of the series of woodblock prints using Tokyo and its new “meisho” spaces as a rolemodel.

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